Why conditional logic is needed in Go - Challenge Your Understanding

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of conditional logic in Go

What is the output of this Go program that uses conditional logic to check a number?

Go

package main
import "fmt"
func main() {
    num := 10
    if num > 5 {
        fmt.Println("Greater than 5")
    } else {
        fmt.Println("5 or less")
    }
}

A Compilation error

B 5 or less

C No output

D Greater than 5

💡 Hint

Check the value of num and the if condition.

The variable num is 10, which is greater than 5, so the if block runs printing "Greater than 5".

🧠 Conceptual

intermediate

Why use conditional logic in programs?

Why do programmers use conditional logic in their code?

A To make decisions and run different code based on conditions

B To repeat the same code multiple times

C To store data permanently

D To make the program run faster

💡 Hint

Think about how programs choose what to do next.

Conditional logic lets programs choose different actions depending on data or situations.

🔧 Debug

advanced

Find the error in this Go conditional code

What error does this Go code produce?

Go

package main
import "fmt"
func main() {
    x := 7
    if x > 5 {
        fmt.Println("x is greater than 5")
    }
}

A Syntax error: missing braces after if condition

B Runtime error: nil pointer dereference

C No error, prints "x is greater than 5"

D Syntax error: missing semicolon after x declaration

💡 Hint

Check the if statement syntax carefully.

In Go, the if statement requires braces {} around the code block. Missing them causes a syntax error.

❓ Predict Output

advanced

Output of nested if-else in Go

What does this Go program print?

Go

package main
import "fmt"
func main() {
    score := 85
    if score >= 90 {
        fmt.Println("Grade A")
    } else if score >= 80 {
        fmt.Println("Grade B")
    } else {
        fmt.Println("Grade C")
    }
}

A Grade A

B Grade B

C Grade C

D No output

💡 Hint

Check which condition the score satisfies first.

Score is 85, which is not >= 90 but is >= 80, so it prints "Grade B".

🧠 Conceptual

expert

Why is conditional logic essential for real-world programs?

Choose the best reason why conditional logic is essential in real-world programming.

A It stores user data securely

B It makes programs run without any errors

C It allows programs to handle different inputs and situations dynamically

D It automatically optimizes program speed

💡 Hint

Think about how programs respond to changing data or user actions.

Conditional logic lets programs react differently depending on inputs or environment, making them flexible and useful.